Hart’s issue has been control. He’s finding the zone at a career rate of 45.5%. Of qualified starters last year, only Joe Saunders (43.8%) pitched within the zone less often.
But Anderson also notes that batters tend not to make great contact against Hart. Therein lies the rub. Can you run someone out as a starter who walks this many people? But you know that control issues are unlikely to get resolved in the irregular work of a major league reliever. Thus far, of course, McCutchen is busy trying to make any starting role for Hart non-existent.